20257290

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:389

約数の個数: 80

約数和(自身を含む): 55277640

約数和(自身を除く): 35020350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 89, 90, 135, 162, 178, 267, 270, 281, 405, 445, 534, 562, 801, 810, 843, 890, 1335, 1405, 1602, 1686, 2403, 2529, 2670, 2810, 4005, 4215, 4806, 5058, 7209, 7587, 8010, 8430, 12015, 12645, 14418, 15174, 22761, 24030, 25009, 25290, 36045, 37935, 45522, 50018, 72090, 75027, 75870, 113805, 125045, 150054, 225081, 227610, 250090, 375135, 450162, 675243, 750270, 1125405, 1350486, 2025729, 2250810, 3376215, 4051458, 6752430, 10128645, 20257290]

約数ペア:

[(1, 20257290), (2, 10128645), (3, 6752430), (5, 4051458), (6, 3376215), (9, 2250810), (10, 2025729), (15, 1350486), (18, 1125405), (27, 750270), (30, 675243), (45, 450162), (54, 375135), (81, 250090), (89, 227610), (90, 225081), (135, 150054), (162, 125045), (178, 113805), (267, 75870), (270, 75027), (281, 72090), (405, 50018), (445, 45522), (534, 37935), (562, 36045), (801, 25290), (810, 25009), (843, 24030), (890, 22761), (1335, 15174), (1405, 14418), (1602, 12645), (1686, 12015), (2403, 8430), (2529, 8010), (2670, 7587), (2810, 7209), (4005, 5058), (4215, 4806)]